Confusing OPK?

I'm using the Clearblue Advanced Digital Ovulation Test. I've now gotten 3 flashing smiley faces in a row (high fertility) but I was only expecting 2 then a normal smiley (peak fertility). The box doesn't say anything directly about possibly having more than 2 high days and what it means. I'm aftraid I'm not actually ovulating. 😔
Anyone else experience this?